How to work with .prm, .dlg and .bin files with st.file_uploader?

Hey guys!
Hope everyone is doing great.
I need to upload different files extensions in my application, but I’m facing difficulties with that. I need to work with .prm, .dlg and .bin files, but when I use st.file_uploader, it returns me type ‘application/octet-stream’.

I already tried to use io.BytesIO to read, but it doesn’t work :frowning:
I’ll be grateful if someone could help me with this.

Hi @samaraprass -

Can you post the code you are trying to run?

In the case of octet-stream, that’s the general mime type for arbitrary data that don’t have a more specific definition. Ultimately, it should work the same, as underneath it’s all bytes of data.


Hi, @randyzwitch! :smile:
I apologize for my superficial explanation and late response.
I’m working on developing a Pylinac web application with streamlit. Pylinac is a Python library to analyze the images and datasets commonly used by therapy medical physicists in the course of their routine linac QA. One of it’s modules, Log Analyzer uses .bin and .dlg type of files. I ran the ‘Tlog.bin’ file in a jupyter notebook and worked just fine with log_analyzer.TrajectoryLog class. But when I tried to use it with st.file_uploader returned this error message: ’ TypeError: expected str, bytes or os.PathLike object, not UploadedFile '.
The code screenshot and error message are below.

Thanks for clarifying!

When you get an issue about UploadedFile, that’s because that is the class name we define within Streamlit. To make the data accessible to other Python programs, please see the Example section in our docs:

Because different libraries expect different sorts of data inputs, unfortunately we can’t make this portion more seamless.


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Thanks for your help @randyzwitch! :slightly_smiling_face:
I’ve already tried reading the file, but then this happened (screenshot) and the app just couldn’t work. I believe it won’t be possible to add this module to the app, unfortunately.

Hey @samaraprass

I recently helped someone facing a similar issue.
To solve it, instead of passing the file directly to the function, I first saved it to the disk using shutil library.
Here is a sample code for it:

if file is not None:
    # save the uploaded file to disk
    with open("Tlog.bin", "wb") as buffer:
        shutil.copyfileobj(file, buffer)
    tlog2 = log_analyzer.TrajectoryLog("Tlog.bin")

Let me know if this helps.



Hi @Kanak!
Thank you so much for your help! :grin:
Worked perfectly.

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